Mechanochemical growth of a porous ZnFe2O4 nano-flake thin film as an electrode for supercapacitor application

M. M. Vadiyar, S. C. Bhise, S. K. Patil, S. A. Patil, D. K. Pawar, A. V. Ghule, P. S. Patil, S. S. Kolekar

Research output: Contribution to journalArticlepeer-review

75 Scopus citations

Abstract

Herein, we are reporting a simple, economic, easy to handle, scalable and reproducible mechanochemical i.e. rotational chemical bath deposition (R-CBD) approach for the synthesis of well adhered nano-flake ZnFe2O4 thin films (NFs-ZnFe2O4) with uniform morphology on a stainless steel (SS) substrate, in comparison with nano-grain ZnFe2O4 thin films (NGs-ZnFe2O4) prepared using a conventional CBD approach. The influence of rotation on the evolution of the nano-flake morphology in NFs-ZnFe2O4 is also investigated. The porous NFs-ZnFe2O4 thin films demonstrated excellent pseudocapacitor properties with higher specific capacitance of 768 F g-1 at high current density of 5 mA cm-2, stability upto 5000 cycles (88% retention), higher energy density (106 W h kg-1) and power density (18 kW kg-1) compared to NGs-ZnFe2O4. The results were also found to be higher than those reported earlier for MFe2O4 based systems.

Original languageEnglish
Pages (from-to)45935-45942
Number of pages8
JournalRSC Advances
Volume5
Issue number57
DOIs
StatePublished - 2015

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